CD56-negative extranodal nasal type NK/T-cell lymphoma
ABSTRACT Extranodal natural killer (NK)/T-cell lymphoma, nasal type, is a rare lymphoma that occurs predominantly in Asian adults. In this report, we describe the clinical and pathologic features of an unusual aggressive lymphoid neoplasm in a child and review the literature on NK/T-cell lymphoma in children. The patient was a 4-year-old Native American male with facial swelling, lymphadenopathy, and fevers. Biopsy demonstrated neoplastic lymphoid cells that expressed CD3, CD8, TIA-1, and EBV-encoded RNA without CD56. The patient failed multiagent chemotherapy and died of therapy-related complications. This case represents an extranodal NK/T-cell lymphoma, nasal type, with an unusual lack of CD56.
- SourceAvailable from: Tomohide Tsukahara
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- "However, considering the findings of TIA-1+, EBER1+ and no TCR rearrangement, we finally diagnosed this lymphoma as extranodal NK/T-cell lymphoma (nasal type). Recently, Miles et al. reported a case of CD56-negative extranodal NK/T-cell lymphoma . In that case, neoplastic lymphoid cells expressed CD3, TIA-1 and EBER1 with an unusual lack of CD56. "
ABSTRACT: Primary lymphoma of adrenal glands is rare, and non-B-cell lymphoma associated with pyothorax is also very rare. Here we report the first autopsy case of non-B-cell lymphoma in bilateral adrenal glands of a 79-year-old woman with pyothorax who had an aggressive clinical course. Immunohistochemically, tumor cells showed CD3+, CD45RO+, CD5-, CD7-, CD4-, CD8-, CD10-, CD20-, CD30-, CD79a-, CD138-, CD56-, granzyme B-, TIA-1+ and ALK-. In addition, tumor cells were strongly EBER1-positive by in situ hybridization. In genomic DNA of tumor cells, T-cell receptor rearrangements were not detected by southern blotting. We finally diagnosed this case as extranodal NK/T-cell lymphoma (nasal type). Virtual Slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8050621197741854.Diagnostic Pathology 08/2012; 7(1):114. DOI:10.1186/1746-1596-7-114 · 2.60 Impact Factor
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